Ralph M Handren

Title: Ralph M Handren: Innovator in Hysteresis Alloy Technology.

Introduction

Ralph M Handren is a notable inventor based in Crystal Lake, IL (US). He has made significant contributions to the field of materials science, particularly in the development of novel alloys. With a total of 2 patents to his name, Handren's work focuses on enhancing the magnetic properties of materials used in various applications.

Latest Patents

One of Handren's latest patents involves a unique hysteresis alloy. This alloy consists essentially of 13-18% nickel, 7-11% aluminum, 0.5 to 10% cobalt, 0.1 to 2% silicon, and the remainder substantially all iron. The production process includes heating the alloy composition to a temperature of about 1650°C or above to form a melt, which is then cast in a suitable mold. After solidification, the casting is heated to approximately 1150°C and held at that temperature to ensure uniform heating. It is then cooled at a rate of about 300°C per minute and aged to produce uniform magnetic properties. The resulting magnets exhibit stable magnetic properties with typical values of Br = 10,000, Hc = 150, and BH max = 0.85. A second stage heat treatment can further enhance these properties, resulting in values of Br = 9,500, Hc = 230, and BH max = 1.2, making them well-suited for hysteresis torque-producing devices.

Career Highlights

Ralph M Handren is associated with The Arnold Engineering Company, where he applies his expertise in materials science. His innovative work has contributed to advancements in the field, particularly in the development of alloys with enhanced magnetic properties.

Collaborations

Handren collaborates with John P McKay, leveraging their combined expertise to push the boundaries of alloy technology.

Conclusion

Ralph M Handren's contributions to the field of hysteresis alloys demonstrate his commitment to innovation and excellence in materials science. His patents reflect a deep understanding of the properties and applications of advanced materials.